Fashion designer and filmmaker Tom Ford was once left red-faced after unexpectedly running into legendary Vogue editor Anna Wintour during a walk on a nudist beach. The style guru opened up about the …

Tom Ford London Flagship Store - Launch Party

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Fashion designer and filmmaker Tom Ford was once left red-faced after unexpectedly running into legendary Vogue editor Anna Wintour during a walk on a nudist beach.

The style guru opened up about the mortifying meeting during a speech at the CFDA/Vogue Fashion Fund Awards in New York City on Monday, revealing he was caught naked by a fully clothed Wintour on a nudist beach in Caribbean hotspot St. Barts.

He said, “It was like one of those dreams in high school when everyone has clothes on except you.”

Ford also dished out advise to young designers hoping to make it big in the fashion world in front of a crowd, which included Wintour.

Julianne Moore, who starred in Ford’s directorial debut “A Single Man,” introduced Ford to the stage, revealing how he made her feel at ease when they first met in the 1990s just months after she had given birth.

She said, “He was handsome, charming, gracious and absolutely took my breath away. And he assured me that, if I didn’t feel comfortable in his dress, that it was fine. He said, ‘Wear it, don’t wear it – it’s just a dress. Don’t worry about it.’”

Scarlett Johansson has praised stars including Beyonce and Sean “Diddy” Combs for injecting the “cool factor” into Barack Obama’s re-election campaign with a new line of clothes championing the …

Goldene Kamera 2012 - Red Carpet Arrivals

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Scarlett Johansson has praised stars including Beyonce and Sean “Diddy” Combs for injecting the “cool factor” into Barack Obama’s re-election campaign with a new line of clothes championing the president.

Beyonce and Combs are just two of the top designers involved in the Runway To Win fashion project, which features limited-edition clothing and accessories emblazoned with pro-Obama slogans.

Johansson helped launched the venture at a New York City party with Vogue editor-in-chief Anna Wintour on Tuesday and discussed the power of fashion in garnering support for Obama as he runs for a second term in office.

2012 Human Rights Campaign Gala

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She says, “I think the most important thing is that the fashion world has an international spotlight shown on it. To be able to use that spotlight on a cause like this is incredible… Conscious consumerism (and) any way to reintroduce that kind of cool factor (to Obama’s campaign) is very valuable… You have to voice your opinion.”

According to online reports, the notoriously fiery star insisted she would only appear on the runway in exchange for a future cover of the fashion bible. She eventually closed the show at the Big Apple’s Lincoln Center.

But Wintour has dismissed speculation of a falling-out, insisting Campbell’s involvement went off without a hitch.

In a statement to New York Post gossip column PageSix, she says, “Naomi was on time, professional and a joy to work with.”

Letterman, who called himself a “dope” who doesn’t know anything about fashion, flashed a view of his gray stockings and invited Wintour to “take a look at those, honey.”

Wintour, making her first appearance on CBS’”Late Show,” is featured in the new documentary “The September Issue” about production of the 2007 issue that — arriving before the recession — was the biggest in Vogue’s 117-year history.

The magazine editor made light of her image as an imperious and tough boss, but acknowledged that she is direct with her staff.

“Well, I’m very decisive and I try and give very clear direction to the people that I’m working with, and sometimes, unfortunately, they don’t hear the answer that they would like to hear,” Wintour said, according to a CBS transcript.

She’s not “always warm and cuddly,” she added, but she appreciates excellent work.

She waved away the notion that she was the model for the cold, driven editor played by Meryl Streep in “The Devil Wears Prada,” noting that Miranda Priestly was part of a fictional tale.

The September issue, which Wintour called the fashion industry’s benchmark, comes at the start of the fall fashion season and is particularly important during the industry’s “challenging time,” she said.

Letterman asked what a person whose fashion budget was slashed to $20 by economic hardship might do with the money.